Page 228 - Demo

Microscopes and Slides
Microscopes and Slides—Prepared Slides, continued
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$7.15
$13.30
$6.00
$ 9.60
$8.65
226
INVERTEBRATE ZOOLOGY, continued
Catalog No.
Description
Price/Each
ANNELIDA (SEGMENTED WORMS)
ML1217
ML1229
ML1231
ML1236
ML1240
Lumbricus terrestris, c .s .
Earthworm, section posterior to clitellum .
Dermacentor variabilis, w .m . Specimen of the common dog tick .
Daphnia, w .m .
The common water-flea .
Insect wings, w .m .
Composite, four types of wings on one slide .
Human louse, w .m .
Pediculus humanis, for morphology .
Pedicellariae, w .m .
Jawlike appendages used for defense by sea stars and urchins .
Sea Star development, w .m .
All stages from unfertilized egg to bipinnaria, inclusive .
Amphioxus, w .m .
Preparation of a small specimen .
ML1221
Lumbricus, c .s .
Composite, sections through two regions: one through intestinal region, the other showing seminal vesicles and esophagus .
8.40
ARTHROPODA (ARACHNIDS)
Parasites— ComparisetTM
A morbidly fascinating springboard to some very basic ideas about evolu- tion, parasitism can be a marvelous teaching tool . A few of the mechanisms by which some organ- isms have evolved to make their living at others’ expense are presented here . Plasmodium, the causative agent of malaria, is shown infecting red blood cells . The fungus Puccinia, the cause of wheat rust, is seen on a cross section of its host plant . Trichinella, the agent of trichinosis, is examined encysted in mammalian muscle tissue . And the human louse, Pediculus humanis, is viewed in its entirety—grasping appen- dages poised .
Catalog No.
ML1402
Description
Parasites— ComparisetTM
Price/Each
$34.50
ML1230
Mite, w .m .
Specimen to show morphology .
5.35
ML1433
Spider, w .m . Young specimen .
9.70
ARTHROPODA (CRUSTACEANS)
ML1233
Copepod, w .m .
Specimen of a common species, usually Cyclops . Copepods are present in virtually all zooplankton assemblages and as primary consumers are a vital constituent of aquatic ecosystems .
5.40
ML1235
Zooplankton, w .m . Mixed species .
9.90
ARTHROPODA (INSECTS)
ML1237
Insect legs, w .m .
Composite, multiple types of legs on one slide .
12.45
ARTHROPODA (INSECTS), continued
ML1241
Drosophila, w .m .
Male and female, excellent preparation for comparing the secondary sexual character- istics of the ubiquitous fruit fly .
8.50
ML1243
Mosquito (Culex sp.), w .m .
Female specimen of the all too common pest . Female possesses proboscis used to extract blood-meal .
8.30
ML1244
Flea, w .m .
Dog or cat flea .
5.65
ECHINODERMATA
ML1405
ML1246
ML1252
$ 6.35
13.95
$11.10
ML1245
Sea Star ray, c .s .
Section through sea star ray (arm) to show digestive gland and external structures .
8.40
LANCELETS
MICROSCOPES AND SLIDES—PREPARED SLIDES continued on next page.